# CUNY La Guardia Community College Statistics Worksheet

Open the attached spreadsheet. Inside the spreadsheet, you will see two sets (columns) of blood serum total cholesterol measurements, one for a drug being evaluated and one for a control group for which people were given a placebo.

First, use Excel to obtain the average and standard deviation of each group. Jot down those statistics on the attached spreadsheet in the appropriate fields (yellow-highlighted section).

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Then apply a 2-sample t-test to evaluate the difference between the two group means (assume these two-samples have an equal variance). Then jot down those statistics on the attached spreadsheet in the appropriate fields (yellow-highlighted section).

Then save your Excel spreadsheet, with your answers, and click Browse My Computer inside this folder to upload your Excel spreadsheet. Then log back in and open the file you submitted to ensure you submitted the correct file even if a Bb confirmation notice has been received.

Again, there is an instructional YouTube video in this folder which will help you to calculate the statistics for this assignment. (I am uploading this through my PC user, not Mac user)

cholesterol values
control
treatment
233
344
291
185
312
263
250
246
246
224
197
268
224
239
239
254
276
234
181
248
252
202
218
212
325
212
188
250
148
169
226
175
242
252
153
183
137
202
194
213
(1) USE EXCEL TO CALCULATE THE STATISTICS BELOW FOR THESE T
CHOLESTEROL MEASURES. (2) THEN TYPE THE STATISTICS INTO THE
RESULTS TO WRITE A CONCLUSION ABOUT WHETHER THERE APPEAR
DIFFERENCE BETWEEN THE MEANS OF THESE TWO GROUPS. (4) SUB
PART 2 FOLDER.
control
treatment
n
mean
std dev
t-stat p -value*
*Apply a 2-sample t-test between two group means (assume these two-samples
Conclusion:
S BELOW FOR THESE TWO SETS OF BLOOD SERUM TOTAL
E STATISTICS INTO THE CELLS PROVIDED. (3) LASTLY, USE YOUR
HETHER THERE APPEARS TO BE A STATISTICALLY SIGNIFICANT
TWO GROUPS. (4) SUBMIT SPREADSHEET THROUGH THE WEEK 2,
ssume these two-samples have an equal variance)

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